7. Ha  Noi is an ancient city on which many customs are still on

8. Vu Quoc Viet, whose works i love very much, is a famous artist

9. Teacher's Day is a day when all the students show their gratitude to their teacher

10. QD, whose works are widely read all over the world, is a famous writer

11. Sa Pa, to which many visitors travel for their holiday, is a famous city

12. Easter is a festival when people will have a lot of fun

13. The river which flows through HCM City is the Saigon river

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23. C to have locked

24. A laughing

S couldn't help Ving

25. C to clean

26. A answering

avoid Ving

27. C making

28. C listening

29. C washing

30. D being

risk Ving

31. D working

carry on Ving

32. A to see

33. D writing

34. C to be

35. C applying

36. B to smoke

37. A seeing

38. A going

39. D going

40. C to cry

cause sb to Vnt

41. D drinking

42. B living

43. A to buy

44. D having stolen

45. A to take

46. C to lend

agree to Vnt

47.  A how to drive